If you did not notice gorhill updated Ublock to 1.16.4.12 for XP... Work with New Moon .Have not try it with firefox 52......https://github.com/gorhill/uBlock/releases
On Firefox 52.0 I got a 'Firefox prevented installing an unverified addon'.
Thanks, I had already done that, but it had reverted to 'True'. Anyway I switched it back again, and uBlock installed. Probably will not matter, as Firefox crashes all the time, so I rarely use it.
- Enter about: config in your address bar and hit enter.
- You might come across a security warning saying This might void your warranty!
- Ignore it, just tap I'll be careful, I promise!
- On the next page, you can notice all the settings to customize Firefox.
- Now enter xpinstall.signatures.required (enter the exact text as it's case sensitive) in the search bar. It will automatically search for the particular setting.
- Notice the Value tab; it should be True by default.
- Double click on the setting to set it False. That's it.